<?php

/*
 * This file is part of SwiftMailer. (c) 2004-2009 Chris Corbyn For the full copyright and license information, please view the LICENSE file that was distributed with this source code.
 */

/**
 * An Authentication mechanism.
 * 
 * @package Swift
 * @subpackage Transport
 * @author Chris Corbyn
 */
interface Swift_Transport_Esmtp_Authenticator {
	/**
	 * Get the name of the AUTH mechanism this Authenticator handles.
	 * 
	 * @return string
	 */
	public function getAuthKeyword();
	
	/**
	 * Try to authenticate the user with $username and $password.
	 * 
	 * @param Swift_Transport_SmtpAgent $agent        	
	 * @param string $username        	
	 * @param string $password        	
	 * @return boolean
	 */
	public function authenticate(Swift_Transport_SmtpAgent $agent, $username, $password);
}
